User's Manual

DMR repeater 18/02/2011 Versione 1.3
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4.3.3 PORTS AND CONNECTORS
UTP LAN Port Ethernet 10BT/100TX (auto MDI/MDI-X) on an RJ45 socket
Optical LAN Port (option) Ethernet 100FX on SC-SC socket
Serial control Port
RS232 V.24 asynchronous 600 ÷ 115200 bps on a DB9 female
connector
BUS control Port TTL on a dual-in-line 10 pins male connector
4.3.4 CODEC VOIP
Uncoded audio source 64 kbps – 8bitx8KHz
Net bit-rate (1CH) 2450 bps
FEC Coded bit-rate (1CH) 3600 bps
Audio frame block 20ms
Jitter (deviation of averaged packet
time delay)
The Base Station is able to compensate Jitter delay up to 200 ms.
The total delay averaged + jitter must not exceeds 400ms (each
way)
Maximum delay
The Base Station is able to compensate round trip delay
less then
900ms (jitters included)
Packet loss < 0.1 %
SLAVE:
70 kb/s in analog to/from Master
24 kb/s in DMR to/from Master (both timeslots)
Minimum bandwidth (network
signaling and remote control polling
inclusive)
MASTER to serve N SLAVES (both timeslots):
70 kb/s in analog to Slaves, 70 kb/s x N from Slaves
24 kb/s in DMR to Slaves, 24 kb/s x N from Slaves